Had them hpc coated and now two have corrosion holes on the bottoms how would be the best way to seal them was thinking of jb weld, or that putty stuff you mix together, then pouring liquid glass in and letting it dry so it would be sealed all around

if running in salt their on their way out,,wont be long before it poaring water in your cylinders..if it were me i would tig weld the holes shut..

i will be in fresh water